No Start / No Spark / Cranks OK - GMC Jimmy / S10 Blazer

In this video I show you how to diagnose a bad ignition switch in a 2001 GMC Jimmy that is creating an intermittent no spark condition causing the vehicle to crank but not start.
*Professional 6-12V Circuit Tester - Indicator Light - Lifetime Warranty by Industrial Tools:amzn.to/2JOgxGg
Ignition Switch:
BWD Part No. CS658
Here is the video with the fix: • Ignition Switch Replac...
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Disclaimer:
Due to factors beyond the control of South Main Auto Repair, it cannot guarantee against unauthorized modifications of this information, or improper use of this information. South Main Auto Repair assumes no liability for property damage or injury incurred as a result of any of the information contained in this video. South Main Auto Repair recommends safe practices when working with power tools, automotive lifts, lifting tools, jack stands, electrical equipment, blunt instruments, chemicals, lubricants, or any other tools or equipment seen or implied in this video. Due to factors beyond the control of South Main Auto Repair, no information contained in this video shall create any express or implied warranty or guarantee of any particular result. Any injury, damage or loss that may result from improper use of these tools, equipment, or the information contained in this video is the sole responsibility of the user and not South Main Auto Repair

[@SouthMainAuto]

*Professional 6-12V Circuit Tester - Indicator Light - Lifetime Warranty by Industrial Tools:amzn.to/2JOgxGg *Here is the video with the fix: kzbin.info/www/bejne/iomuoWaLer2hi7M

[@3408kid]

eric great job as always i love how you explain everything in detail i have a 2004 chevy silverado with the 5.3v8 and it every now and then does a security lockout on me for like 15 mins where the vehicle will crank over but there is now fuel or spark being supplied i assume and there is a lock on the indicator lights in the dash that lights up any idea what to do in this situation it really sucks

[@bentboybbz]

Comment on a 3 year old vid. Good on ya mah dude. I rewatch your vids sometimes. ✌💙💵

[@baldy194859]

good mechanic ! I like mechanics that make sure what the trouble is before doing a bunch of work that's not needed !

[@josephpuchel6497]

Hey Like watching videos on electrical situations and repairs. You have excellent tutorial videos

[@mikeyellen362]

Tip for every1- Dont pull the ecm1 fuse or fuck with the ecm by the battery.

[@chrisforker7487]

Love going way back and watching these early episodes!

[@nzsaltflatsracer8054]

The 43 people that gave thumbs down must be responsible for returning parts they installed.

[@jasmith1867]

158 dislike Eric's video as of today. I suspect they are too dumb to diy, or maybe they are competitors.

[@unclemarksdiyauto]

NZ Salt Flats Racer, you probably are right!

[@mikemeiring6710]

Sometimes fools are fools

[@stangguy6604]

A pointer to those who Checked over the same trouble shooting that this guy did and do have power key on and starting position, could be the control module next to the coil. Just fixed a 2005 4.3 vortec. Thanks to this video for singling out other potential problems! Thumbs up!!

[@sky3353]

Thanks for the videos Eric. Very good explanations and easy to understand. Watch them for hours. Just an old guy that likes to learn and tries to do my own work. Thanks.

[@gregoryj5874]

Beauuuutiful video! Thank you South Main Auto Repair for taking the time to show the most thoroughly done diagnosis I've seen on a No crank. Step by step. Awesome! And I like your sarcastic humor too. Thanks KZbin for creating a platform for skilled mechanics to display their skills for all to see. Blessed!

[@scottlaster1763]

I realize this is an older one, I am amazed every day by how many people would replace half a dozen other components before checking basics like power to the coil. Great post, straight forward diagnostics. I am working my way through them Eric. lol

[@RC-Heli835]

Of all videos I would have expected zero thumbs downs on this one. Awesome work man. Once again you tracked it down like a hound. The wiring diagrams are an invaluable tool. It's a shame they are so expensive.

[@danfogg4848]

That's great. It's good to see actual mechanics still working correctly. There's to many part's replacers out there.

[@andyginterblues2961]

I only wish that I watched this video a few months ago, now I know exactly what I need to check for to get my 2003 Chevy S10 Blazer running. It would have saved me from a lot of agony, ordering new parts that I probably didn't need etc. It's been cranking but no start, Thanks for posting!

[@bfordcole]

This ended up being my problem 2000 Safari Van. This saved me so much.. I have to order the switch and install it.. I made a "Hotwire switch" to get the van to move. I am glad that people are doing these videos. Thank You!

[@johnkirkland3888]

Absolutely awesome. My favorite videos are the ones where you have to get into the wiring diagrams. Probably because that is one of my weak areas. I'm learning though. Thanks for this video.

[@ericg4915]

Its everybody's weak area, the most complicated part of a car is the electrical

[@Nothingman88]

Excellent, clear breakdown of all the wiring and diagnostics. Thank you.

[@chrismojica8357]

Just replaced my motor on my 99 silverdao having the same issue no spark thanks man you really gotta keep making videos for people like me

[@RyouConcord]

Thanks for the video. On my 97 S10, we didn't end up needing to replace the ignition switch, but watching this helped us rule out the ignition switch: turns out, it needed new spark plugs.

[@nunya6834]

Great video. Thanks for showing the correct way to diagnose a no start vehicle. Precise and to the point. My sisters is doing this and mine 98 Blazer won't start when it's cold outside. I'll have to try what you did in this video. Thanks again for a great diagnoses on a vehicle.

[@AccessDude61]

You win the prize for the best diagnostic video ever on you tube I've ever seen. You're the man Eric!

[@ScottysDetailing]

Great videos diagnostics and wiring love watching your stuff.

[@fredbach6039]

Just one little clue (the delayed spark) gave you the right diagnosis right off the top and then you confirmed it. Very nice work.

[@elidames6889]

You taught me how to read a diagram in a total of 40s. Thank you so much

[@chrisbeavers123]

I want to tell you this is the best most thorough video I've seen online. Excellent source of information.

[@siulumlion]

The best teachers show you how to find your own answer. Good video!

[@michaelspain7805]

Good video man 57 years old and a car guy i thought ...lol...never stop learning ..good job brother !

[@B81Mack]

I was hoping this is my problem but it isn't. Nonetheless, I like the articulate and thoughtful analysis presented here. This man would make a great teacher/instructor. Well done sir.

[@eugenejankowski9977]

this video helped me out tremendously, thank you for your efforts in filming and making us all aware

[@lothoglas9793]

Had a hydro-lock issue after replacing fuel injector spider assembly on a sonoma v6, cleared that and had a crank/no start issue. After some testing decided my secondary coil on ignition coil was bad. Hoping to see some tips...but ended up thoroughly enjoying how you traced out the problem so much I forgot I was looking for ignition coil replacement. Great job!

[@jackmohabir9490]

You are a great , smart , affable mechanic. Good job , Maestro!

[@buddasro1]

Wow! So glad i subbed your channel. I watched your vid on belt tensioner r&r tuesday and ordered the part. While i was at advance my friend called me and said he was experiencing this exact issue and we were stumped and called it a night. Open up KZbin tonight and this video was first in my feed! You rock, thanks for posting great USEFUL content!

[@abrahamcastaneda2051]

Saturday May 23, 2020.. after replacing fuel pump, relays, fuses, fusebox, coil packs and even ECM. Found your video and IT WORKED THANK YOU VERY MUCH. Ran out $ by buying all unnecessary parts.. so I'm running with a hot wire hanging out lol. I APPRECIATE the wiring diagram. Colors helped out a lot since I was trying to guess

[@quickdeuce]

Thanks much, it was cool watching a pro work through the problem instead of just throwing parts at it - as "some so called" pros have done to many of us, THEN they charge us shop rate PLUS all the unnecessary parts for their education. Yes, some of us have had it happen. It's so cool to watch you eliminate the many various parts as the possible culprit and zero in on what the main problem was.

[@richard1835]

I really like your down to earth approach to engine diagnostics. Thank You...Richards Automotive Air Conditioning Service

[@MB-xq3ol]

My 1988 Chevy S10 4 cylnder is doing the same thing, all I can say is you are the MAN, Thank you very much good diagnostic skills and Thank you for sharing the problem and solution.

[@maintenanceman6526]

You do such a great job explaining everything, love your channel.

[@hondaabe]

This has got to be one of the most easiest Video to understand Good Job

[@SouthMainAuto]

Thanks Abraham Robinson

[@63256325N]

The first thought through my brain was ignition switch and mice. I was wrong about the mice. Thanks for the video.

[@mikehunt2866]

Thank you for posting this video I never thought to check the 15 amp fuse and because of this video I got my truck started thank you.

[@scooterdog29]

Really like your vids. You are clear and loud, and you know your stuff. Working on the damn crank sensor now. thanks for the vid

[@michaelward668]

I wanna say thank you for the information you doing a great job yet helped me out on my sons 2000 GMC Jimmy engine wouldn't shut off and tested Ignition switch it was bad. So thank you keep up the good work sir

[@jimbola77]

very very excellent diagnostics!!! I wish we had some great mechanic's out here in the san fernando valley thank you partner for sharing!

[@rickfarrell9279]

You ain't a mechanic, you just plain smart lol

[@buckzilla1466]

Pain in the rear and back Great Video and Diagnosis Good Job Eric!

[@macgyver2417]

I like how logically you you diagnose problems. Good job.

[@robertaccorsini4663]

I started watching Eric O when there were about 60,000 subscribers. I see he still had the Verus in this video. How times have changed.

[@juang1914]

dude I love what you do to help the new techs thx

[@marvinaguilera8243]

Nobody Breaks it down better than you do thank you I appreciate this video I was having a hard time with a Chevy Astro I just fix the problem because of you thank you so much very much 👍👌

[@jasmith1867]

Hey Eric, you really get r done. I've learned a lot from your videos. Thanks a lot

[@richheadd3196]

I like having people like you around

[@briant3403]

my compliments,dam, this is the best explained video without all the fixings like many others, just wow. gives me something to go on. thanks much.

[@wayne8498]

Excellent. Very helpful framework for many situations. Thank you

[@shearonroe1553]

thank u so much. easy to understand and I may have this problem in the future, and even though I went to school years ago, always always always use diagrams and instructions.

[@06111NDO]

Excellent Diagnosis ! Loved it . Keep up the good work.. :) Cheers !

[@kenknight6629]

This is the best diagnostic video I have ever seen. I loved the way you used the test light to diagnose this. Great job!

[@jamesrice9975]

Cuz hes the real deal right. I think I cn learn something here. I am shade tree myself (back in the 70's) and now trying to pay off my lift. I just poured concrete and installed a lift so I can enjoy my hobby. who knows, I might even make a buck. Now that I have my shop set up, I need to learn how to make youtube videos. So anyone that wants to give a tip, I a more than welcome that. thanks

[@jamesrice9975]

Computers on vehicles now is my biggest hurdle. But like I said, I installed lift and also bought a OBDII scanner so at least I am trying. It is the same basics, just learning to talk to the computer, or is the computer talking to me?

[@MOVIE7TUNES]

Great job,you help a lot of stumped, shade tree fixers Im sure.Thank you sir!

[@NotMorganFreeman.]

This was so impressive that I had to subscribe.

[@mr.nobody9630]

Those wiring diagrams are very helpful. A + Rating

[@olspanner]

Excellent diagnostic procedure. Great video

[@joemikos9155]

Awsome job! I was mechanic for 20+ years, ASE cert in all aspects. I owned a shop with 20 +- employees. Did mostly HD trucks. I'm sorry, I digress. After years (17) of being out of the buis I realize I need much retraining, (had cancer) Your vid is inspirational and has reminded me I need to stay patient, (weak area for me). As I gain strength I have been getting back into it. As you know it gets in your blood. Thanks for the inspiration. Much respect!

[@SouthMainAuto]

Joe Mikos Do you mind if I ask what cancer you had. I just watched my dad, a heavy duty shop owner of 34year go through it.

[@marypaulk954]

Amazing video. Having an issue with my daughter's 2001 S10 4.3 V6. You have given lots to check out!! thank you!

[@thundermike9944]

Very well executed... excellent video!!thanks for the class!!!

[@AverageNate]

Thank you so much! I'm 95% sure this is exactly what's going on with my 1998 Chevy S10. I've been noticing the last month or so the engine starting when I let off the key most of the time. So when I saw your video and the same thing I was for sure that was the problem. So I had my wife come Al and start my truck while I tested the fuse but... The truck turned over no problem.REALLY!?! I did remove that fuse and reinserted before I had my wife crank it over so I'm not sure if that helped the issue. Guess I'm going to wait to see if it stops working again. But thanks so much for your work

[@chuckgates1171]

This really helps. I own a 2002 s10 4.3 Been a great truck.

[@RDG.357]

Pretty sure you just fixed the same issue on my '01 Jimmy... Thanks for the vid!! I was getting ready to buy new plugs, wires, cap & rotor hoping it would solve my issue (it still needs them, but it probably wouldn't have solved it & I would have driven it off a cliff because I am tired of sinking money into it.) :) I work at a different auto parts store... Same issues with the bad box & used parts sometimes making it out. We are supposed to check returns at the time of return. You don't take the cutomer's word for it that it has not been installed / used. Also ~ the warehouse is supposed to check returns that we send them, especially if they are being returned as "new"... We get boxes that look like that one from our warehouse!! I always check the part if I come across one. Basically it is told that "well, you don't install the box!" ugh. No, but it is pretty crappy to hand a beat up box to a customer... doesn't help their confidence in the quality, even if the part inside is fine. Usually it is one of the last ones on the shelf in the warehouse though, so getting another one may take longer, if it is even still available. We can only do so much. Which is why I check the part & usually ask the customer to look it over in front of me, just to be sure it passes their inspection too. Apologize for the crap packaging & move on.

[@codydietrich4246]

I love your videos! They've helped me fix more than one vehicle

[@lifeathand1062]

Great video a true mechanic not just a parts changer

[@athulbnair]

Great to see how you diagnose starting trouble. In India they will not do this, will ask us to replace parts without any genuine evidence.Once my old 2007 model Suzuki broken down, on the next day, after regular service. On-road assistance guy came and told the car need multiple part replacements, including alternator. Finally he figured out it is a loose contact in a particular switch. That guy did that fixing by trial and error and I have not replaced anything in contrast to his initial conclusion on part replacements. While I questioned him earlier how he had concluded car needs part replacement he is unable to answer me.

[@goodfellasinc.5648]

whoever is putting thumbs down on this video must not like good videos accurate videos videos that teach you step by step and a great video to learn off of I own the shop been a mechanic for over 30 years and this is the way you diagnose the problem on a vehicle good job

[@kenknight6629]

I love this video. I learned alot from it Thanks much!!!

[@terryporter7183]

helped some found the 15 amp fuse blown stared and ran a little then blow again still working on it. thanks!!

[@MsLoneWolf4]

thanks, now I know couple more test to try on my 93 s10 that just started this issuse

[@markdeyoung7913]

thanks what a educational video. i appreciate smart technicians and you are. keep them coming.

[@troyharris2976]

Well done..clear,concise and professional.

[@AntonioClaudioMichael]

Love these Older Videos Eric O and You Have Come Along Way From the Shyness From these back in the day videos To now Always great work @SouthMainAutoRepairLLC

[@Inisfad]

While I know so many of us now have new, computerized cars that give us all the information that we need to diagnose, there are still many of us with old clunkers, as well as the need to be able to deal with these issues through ‘old school’ efforts. I’d like to see more of these.

[@joekline5283]

Thank you very much it work,Iam on fixed income and you saved me!and big bucks.

[@72bolito]

Eric, I just subscribed to your channel (I probably would have paid to do so lol). Anyway, I'm just letting you know what everyone else probably thinks about you. You have a gift! The way you can communicate your expertise to us DIY'ers and professionals is unlike many other "gearheads" that I've come across on the net. Like probably all of your other followers, I too, am having car problems. But I'll leave that for another day. Right now I'm just gonna amaze myself with your talents and enjoy your videos. Please keep up the good work!

[@RestoreITdontJunkIT]

I just found your videos and channel I am so glad I did. Thank you very much and happy new yr. Keep up the great work sir. 👍👍

[@isitreal1459]

Nice Diagnosing Eric really detailed, thank you.

[@brianstaude2783]

Great job. I have been lucky, throw a cap & rotor at it {a number of times} and roll. I'll be back to watch this again when it catches me. Thanx!

[@turtlesrule7564]

You made that look too easy, Thanks, that helped me out big time.

[@SouthMainAuto]

stephen martin YW

[@petemedina8446]

Cool video and information I'm having ignition lock cylinder issues on my 03 Malibu.

[@donschneider7252]

I like your dialogue and method of diagnoses, Wish I was less arthritic and I would be better able to use same for repair

[@donaldpetrey5843]

Great vid and great step by step troubleshooting. One of the best vids by far 100% awesome.

[@billwheat1962]

Awesome detailed and clean instructional video!

[@gmcnelly2468]

Always check the box before you leave or let the delivery driver leave. I learnt my lesson the hard way!

[@frankhahn3121]

Very good video! You know what you're doing. You just fixed a 2001 s10 I have been fighting for a year with this intermitant problem. If you put that truck in a heated garage for a couple of hours my bet is it would start. Thank you very much!

[@SouthMainAuto]

Your welcome! I hope it solves your problem. Pretty easy condition to test for if you have the same symptom. Did you see the link to the R&R procedure for the switch?

[@nedalwaleed1583]

You give us important information. Thank you my friend

[@chadvanderpool1978]

This man here is the best mechanic on youtube imo. He knows his shit and he teaches you along the way. These videos have helped me tremendously. Thank u sir and i respect your intelligence. But mostly just jealous of it lol

[@gerardoiniguez371]

Thanks to this video I found the problem a darn blown fuse and I thought I had check all the fuses I just never check ECM 1 fuse

[@jweber595]

Absolute best video ive seen on youtube. Good shit brother.

[@oldmanaero9962]

Hello Eric, Thank you so much for this video. I had the same exact problem with a 2002 Chevy Silverado I bought used a few months ago except mine was an intermittent problem as that last little bit of spark at the end of the crank cycle was enough to start the truck....but only when it was warm, as it got colder I would have to crank it for numerous short bursts until it could fire with that tiny amount of spark on its last 1/4 turn. It took awhile of checking things until I realized the motor would only start as I disengaged the starter. From there I was lucky enough to find your site and search my problem. I couldn't find a wiring diagram for my Silverado but took a chance on the ECM1 circuit and it was the same as the Gimmy. For anyone else out there with a similar problem don't let the hot start cold no-start thing throw you because it still could be the ignition switch. Eric you have a great selection of help videos and do a great job of teaching. Cheers to you! Dean

[@BrimstonePsycho]

I have 96 jimmy with this exact same problem, no spark. I shall retrace your step from start to finish first and let you know how it goes. Thx for the video brah, UUURRAAAH!

[@SouthMainAuto]

BrimstonePsycho Oh ok

[@KJ-nx7hh]

great diag . Had the same prob. your video was the help I needed . TY .

[@zigen9999]

So glad I watch your video. Helped me solved my RB problem which all other stupid mechanic cannot solve. You are the best!!!

[@kevinsteinberg6069]

Was urs cranking no statt

[@shanebrown3795]

Nice to see some actual troubleshooting going on. Good job.

[@SouthMainAuto]

Shane Brown Thanks :)

[@AngeloC49]

WOW!! My old parts guy would of never taken back an electrical part once it was installed!!! Cheers 🍻

[@billyspray5357]

I’m only 3:37 in and gona go ahead and subscribe. Love the detail, patience with terminology taking in consideration for a viewer not being mechanically inclined. Anyways going to get back to viewing… subscriber right here

[@SouthMainAuto]

Appreciate that. Thank You! Actually going to replace the switch in it today. Just got the new one yesterday. A little better shape than the first one they sent me haha.

[@aviatorman78]

+South Main Auto Repair My Jimmy has a problem like this, but it also back fires from the intake should do the same thing you did of is the problem to big to fix?

[@skcoryhpargonrop]

Fuel Injection Units faulty. Open intake plenum for replacement, Backfiring is leaking fuel. Common on the 4.3L engines

[@brandonneil8954]

that backfire is timing.

[@aviatorman78]

I got rid of the peace of junk don't bother guys.

[@andylee1122]

Wow totally awesome i love this channel, when you have the right tools everything just seems so easy turnt out the 2008 chrysler pacifica needed a ignition switch plus auto trans axle seal ,had to refill with three quarts of transmission oil

[@3wilko]

really good video and good trouble-shooting skills! thanks

[@gregoryjoubert2606]

Excellent diagnostic skills!

[@shep6123]

I think you for your videos because they really helps me thank you thank you